1276532473 has 2 divisors, whose sum is σ = 1276532474. Its totient is φ = 1276532472.

The previous prime is 1276532471. The next prime is 1276532497. The reversal of 1276532473 is 3742356721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772395264 + 504137209 = 27792^2 + 22453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1276532473 - 2¹ = 1276532471 is a prime.

Together with 1276532471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1276532471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638266236 + 638266237.

It is an arithmetic number, because the mean of its divisors is an integer number (638266237).

Almost surely, 2^1276532473 is an apocalyptic number.

It is an amenable number.

1276532473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276532473 is an equidigital number, since it uses as much as digits as its factorization.

1276532473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 40.

The square root of 1276532473 is about 35728.5946127188. The cubic root of 1276532473 is about 1084.7857103329.

The spelling of 1276532473 in words is "one billion, two hundred seventy-six million, five hundred thirty-two thousand, four hundred seventy-three".